Depends on what you mean by space. If they are literally going to be used outside of the space capsule, then they must be able to handle the rigours of being in a vacuum, and be subjected to extreme temperature variations. In the shade, the camera will easily fall to deep freezing temperatures, while in the direct sun will get extremely hot. Normal lubricants probably won't hold up to this abuse. Also, if the astronauts will be handling the camera while wearing cumbersome gloves, then the camera must be equiped with focusing rings, aperture scales etc. that can easily be manipulated with these gloves. It may be impossible for the astronaut to use a conventional viewfinder while wearing a space suit, so alternate framing devices and focus aids must be devised. I am sure there are many other factors that I haven't thought of, but I think you get the "picture". Dan C. At 01:13 PM 14-08-02 -0700, Gordo wrote: > >I read that cameras that go into space (Apollos and Shuttles) need to be >modified. Yet, I understand that, besides being light-tight, a photo camera >should basically need a pressure plate to keep the negative flat and a >shutter. No big deal, apparently. > >So, how / why do cameras that go out to space need to be altered? > > >You know, trying to find out, just in case... > >(next thread would be "Re:photo ops in Mars, anyone?" :-P > > >Alberto Tirado > >